NSArray *array1 = [NSArray arrayWithObjects:@"iphone",@"ipod",nil];
NSArray *array2 = [NSArray arrayWithObjects:@"mac",@"imac",@"mac pro",nil];
//类方法初始化自动释放
NSDictionary *myDictionary = [NSDictionary dictionaryWithObjectsAndKeys:array1,@"mobile",array2,@"computers",nil];//注意用nil结束
NSLog(@"myDictionary = %@",myDictionary);
int dictSize = [myDictionary count];
//访问字典中的值
NSArray *mobile = [myDicti......
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